نتایج جستجو برای: vigour index
تعداد نتایج: 397262 فیلتر نتایج به سال:
Production of high quality seeds in African leafy vegetables has not been practiced due to varying reasons including incorrect harvesting stages and fertilizer rates. Jute mallow (Corchorus olitorius L.) pods do not ripen simultaneously and fruits left to dry on mother plant long before harvesting, which face seed quality deterioration. Timely seed harvesting ensures maximum seed quality attrib...
Proximal sensing represents a growing avenue for precision fertilization and crop growth monitoring. In the last decade, agriculture technology has become affordable in many countries; Global Positioning Systems automatic guidance instruments proximal sensors can be used to guide distribution of nutrients such as nitrogen (N) using real-time applications. A two-year field experiment (2017–2018)...
Beta vulgaris belongs to the family Amaranthaceae and was found to have halophytic ancestors. The objective of this study was to investigate the effect of sodium chloride on seed germination, therefore the early stages of seedling growth of Beta vulgaris grown under different salinity levels (0, 100, 150 and 200 mM of NaCl) were studied. The experiment was laid out in a completely randomized de...
BACKGROUND AND AIMS Root traits can be selected for crop improvement. Techniques such as soil excavations can be used to screen root traits in the field, but are limited to genotypes that are well-adapted to field conditions. The aim of this study was to compare a low-cost, high-throughput root phenotyping (HTP) technique in a controlled environment with field performance, using oilseed rape (O...
It was evaluated the damage caused by Bruchus pisorum on the germination ability of pea forage cultivars. Result of damage in seeds with parasitized larva was a significant decrease of the germination by 16.4% percentage points, the length and weight of primary radicle by 16.8 and 24.5%, the length and weight of plumule by 12.3 and 14.1%, the vigor index of primary radicle and plumule by 32.5 a...
BACKGROUND AND AIMS The primary physiological mechanism influencing tree vigour in size-controlling rootstocks of peach has been related to the hydraulic conductance of the rootstock. Differences in rootstock hydraulic conductance are a function of rootstock xylem vessel characteristics. The present research examined whether the vigour and xylem vessel characteristics of the rootstock influence...
Raising vegetable seedlings in pro trays is becoming an innovative approach to producing quality horticulture. The present investigation was conducted evaluate the effect of arbuscular mycorrhizal fungus (AMF) Glomus bagyarajii and potassium (K) solubilizing bacterium Frateuria aurantia singly together enhancing growth capsicum raised under polyhouse conditions. Different parameters such as sho...
An experiment was undertaken to identify heterotic rice hybrids for aerobic condition based on physiological and root characters associated with water stress tolerance in rice. Panicle harvest index, a substitute for spikelet fertility is used as a secondary trait in the selection of drought tolerant genotypes. Deep roots are required to explore the soil profile for effectively absorbing water ...
Damping-off of chilli caused by Pythium aphanidermatum is a major nursery disease in vegetables. In vitro experiments evaluated the effect of eight isolates of Trichoderma species (from chilli rhizosphere) were tested against P. aphanidermatum. All the Trichoderma species had varied antagonistic effects against the pathogen. Among them, TVC3 recorded maximum growth inhibition of P. aphanidermat...
Remote sensing offers an efficient and reliable means of collecting the information required, in order to map crop type and acreage. Besides providing a synoptic view, remote sensing can provide structure information about the health of the vegetation. The spectral reflectance of a field will vary with respect to changes in the phenology (growth), stage type, and crop health, and thus can be me...
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